When to plant watermelons in Tver: 16 June – 1 July

In Tver, watermelon: sow for seedlings from 28 April to 3 June; plant into a greenhouse from 26 May to 1 July; plant out into open ground from 16 June to 1 July.

Watermelon in Tver: soil, season and weather

In Tver the soil, not frost, sets the date: the last frost is over around 3 May, but the top 7 cm of soil reaches 18 °C — the minimum on the watermelon card — only around 16 June, 44 days later. 116 days separate planting out (16 June) from the first autumn frost (10 October); the card's 59 days to the first harvest leave 57 for picking, so a start 8 weeks late would still fit.

Last spring frost	3 May
Top 7 cm of soil at 18 °C	16 June, 44 days after the last frost
Into an unheated greenhouse	26 May – 1 July; May outside: 6.2 °C at night, 16.9 °C by day; card 18–35 °C
First autumn frost	10 October, 116 days after the start
Days in the bed to the first harvest (card)	59
First harvest, if planted in this window	14 August – 29 August
Days left for picking	57
Daylight	16:42 on 19 May, 17:49 on 16 June
Watering outdoors when fruiting (card)	every 5 days; the driest month, September, has 9 rainy days

The same dates in Tver hold for Cucumber, Bell Pepper, Eggplant, Zucchini and Pumpkin.

Watermelon in Tver: care after planting

Planted on 16 June: in the first weeks water every 5 days.

Feeding, by the card’s schedule from that day:

16 June — feed: balanced (NPK)

Pests and diseases of watermelon to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Weather in Tver during the watermelon season

No month of the season averages above the watermelon card's 18–35 °C by day; the warmest, July, averages 23.1 °C. Months that stay below 18 °C even by day on average: September (16.3 °C) and October (8.9 °C). Nights average below 18 °C in every month of the season, from 3.1 °C to 14 °C.

Month	Day, °C	Night, °C	Rain, mm	Rainy days	Daylight on the 15th
June	21.7	11.5	79	12	17:48
July	23.1	14	104	16	17:15
August	22.3	12.8	69	11	15:15
September	16.3	8.2	51	9	12:51
October	8.9	3.1	68	13	10:28

ERA5 2016–2025, Open-Meteo

Watermelon in nearby cities

Around Tver, Kaluga is 4 days earlier and Cherepovets 6 days later.

City	Distance	Date	Difference
Moscow	162 km	14 June – 5 July	2 days earlier
Yaroslavl	254 km	15 June – 1 July	1 day earlier
Kaluga	260 km	12 June – 2 July	4 days earlier
Cherepovets	279 km	22 June – 8 July	6 days later
Vladimir	287 km	13 June – 6 July	3 days earlier
Ivanovo	308 km	15 June – 2 July	1 day earlier

Where to buy watermelon plants and seeds near Tver

Buy plants ready to set out from 16 June to 1 July (from 26 May to 1 July for an unheated greenhouse); seed for raising your own is sown from 28 April to 3 June. Within 15 km of Tver OpenStreetMap lists 9 garden centres, 2 farm-supply shops, 8 markets and 12 farm shops (collected 27 October 2026).

Продукты 24 часа — farm shop
2 km
Натуральные продукты Афанасий — farm shop
4 km
Экобутик "Макларин" — farm shop
1 km
Продукты — farm shop
1 km

Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

Questions